Programmable Thermostat, 2H/1C Heat Pump, 1H/1C Conventional, T6 Pro
15 Available At All US Supply Locations

Honeywell T6 Pro Programmable Thermostat – TH6210U2001/U
The Honeywell T6 Pro TH6210U2001/U is a 2 Heat/1 Cool programmable thermostat engineered for compatibility with conventional systems and heat pumps. Designed for ease of installation and operation, it supports multiple scheduling formats and integrates Honeywell’s Universal Wall Plate (UWP) for simplified mounting across product lines.
System Compatibility
- Controls up to 2 Heat/1 Cool heat pump systems
- Controls up to 1 Heat/1 Cool conventional HVAC systems
- Compatible with 24 VAC forced air, hydronic, gas, oil, and electric systems
Key Features
- 7-Day, 5-1-1, or 5-2 Day Scheduling: Selectable programming options for customized control
- Universal Wall Plate (UWP) System: Streamlines mounting and wiring for T Series models
- Real-Time Clock: Automatically adjusts for daylight saving time
- Selectable Fahrenheit or Celsius Display: Supports both unit preferences
- Auto/Manual Changeover: User-configurable based on system needs
- Onboard Diagnostics: Includes equipment and system status alerts for contractors
Technical Specifications
- Temperature Control Range: 40°F to 90°F (heating), 50°F to 99°F (cooling)
- Operating Humidity: 5% to 90% RH, non-condensing
- Display Area: 5.44 sq. in. backlit digital interface
- Mounting: UWP-compatible baseplate
- Power Supply: 20–30 VAC or 2 x AA batteries
- Terminal Designations: R, Rc, C, W, Y, G, O/B, AUX/E, L, K
- Dimensions: 4-1/16" H x 4-1/16" W x 1-3/32" D
Installation Considerations
The T6 Pro TH6210U2001/U is designed for quick setup using the UWP mounting platform and installer setup menu. Installation can be completed with standard tools and typically requires only basic wiring knowledge. For applications involving dual-fuel or multi-stage systems, professional installation is recommended to ensure proper configuration and code compliance.
Contractor Applications
- Multi-Application Flexibility: Supports both heat pump and conventional systems in a single SKU
- Fast Setup: Simple programming and wiring reduce installation time
- Reliable Operation: Includes battery backup and configurable system alerts for diagnostics
Summary
The Honeywell T6 Pro TH6210U2001/U offers programmable flexibility, system compatibility, and installation efficiency for residential and light commercial HVAC projects. With multiple scheduling modes, universal wiring support, and contractor-friendly features, it’s a dependable choice for modern climate control solutions.
Specifications
| Weight | 0.810000 |
|---|---|
| Length (inches) | 6 |
| Width (inches) | 4.06 |
| Height (inches) | 4.06 |
| Item Type | Thermostats |
| Brand | Honeywell |
| Contact Rating | 20/30V AC |
| Display Type | Backlit |
| Humidity Range | 5% to 90% RH |
| Manufacturer | Ademco, Inc. |
| MPN | TH6210U2001/U |
| Overall Depth | 1.09 in |
| Programs per Week | 7, 5-2, 5-1-1 |
| Stages Cool | 1 |
| Stages Heat | 2 |
| Warranty | 5 Years |
| Temperature Settings per Day | 0, 1, 2, 4 |
| Color | White |
| Connection Type | Hardwired |
| Control Range | 40 Deg to 99 Deg F |
| Differential | 1 Deg F |
| Domestic/Import | Import |
| Fan Switching | Yes |
| Mounting Type | UWP Mounting System |
| Number of Stages | 3 |
| Number of Zones | 1 |
| Overall Width | 4.06 in |
| Power Source | Battery/Hardwired |
| Switch Type | Relay |
| System Switching | Auto-Heat-Cool-Off-Emergency |
| Thermostat Type | Programmable |
| Application | Heat and Cool |
| Includes | Universal Wall Plate Mounting System, Mounting Hardware, J Box Adapter, Decorative Cover Plate, Installation Instructions and User Guide |
| Primary Voltage | 20/30 VAC |
| Item Returns | This item can be returned |
